You are advised not to use any detergent or spray cleaner to clean the mattress. The reason is clear. Cleaning the mattress using excess cleaning detergent or liquid, the mattress will be wet, and the dampness in the mattress will make the foams lose their level of resilient, and the coil might turn rusty. By protecting your mattress properly with a good quality mattress protector, especially a waterproof one, will usually do the job in keeping the mattress clean and hygienic. You may wish to consider getting our premium 100% Cotton Fitted Waterproof Mattress Protector. For more information, please click here.